Whoa! Those b*stards at Sun that are responsible for the "no-one is allowed to see our site without password and confirmed email access" policy have turned up the heat (...at least, since the last time I had a JDC id).
If you have a JDC login and have set it to auto-login, even attempting to download the latest JRE/SDK triggers background checks (and if there's anything on your JDC login they want more info on, it demands to update your membership info etc before you are *allowed* to download the files. Including your address info!).
To bypass it, you have to logout, and then - lo and behold! - you're "allowed" to download stuff without the checks.
...Just like the bad old days of 2003 where some evil scum-sucker @ sun decided to make "logging bugs" require username, password, email address, home address (this may have been optional
can't recall - but it wasn't optional for the JDK downlaod just now!!
), etc. And then attempt to rewrite 9 years of history by making an official declaration to the support teams that "logging java bugs has always required a JDC account".